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MHT CET · Chemistry · States of Matter

A closed container contains mixture of non-reacting gases A and B. Partial pressure of \(A\) and \(B\) are 4.5 bar and 5.5 . bar respectively. Find mole fraction of \(\mathrm{A}\) and \(\mathrm{B}\) respectively.

  1. A 0.035 and 0.065
  2. B 0.055 and 0.045
  3. C 0.45 and 0.55
  4. D 0.55 and 0.45
Verified Solution

Answer & Solution

Correct Answer

(C) 0.45 and 0.55

Step-by-step Solution

Detailed explanation

\(\begin{aligned} \mathrm{P}_{\text {Total }}=\mathrm{P}_{\mathrm{A}}+\mathrm{P}_{\mathrm{B}} & =4.5+5.5 \\ & =10.0 \mathrm{bar}\end{aligned}\)
\(\mathrm{P}_{\mathrm{A}}=x_{\mathrm{A}} \times \mathrm{P}_{\text {Total }}\)
\(x_{\mathrm{A}}=\frac{\mathrm{P}_{\mathrm{A}}}{\mathrm{P}_{\text {Total }}}=\frac{4.5}{10}=0.45\)
\(x_{\mathrm{B}}=\frac{\mathrm{P}_{\mathrm{B}}}{\mathrm{P}_{\text {Total }}}=\frac{5.5}{10}=0.55\)